It builds on the experience gained in the software engineering discipline of building software architectures in UML (think of the classic class diagram.)
它是基于UML中构造软件架构(想一想经典的类图)的软件工程学科中所获得的经验。
This serves as a useful base case, similar to a base Visitor class in the classic Visitor pattern.
这将作为一种有用的基本用例,类似于经典访问者模式中的基本 Visitor 类。
A classic example is to compare a simple class in Java and scala.
找个经典的例子来比较一下看看。
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